Experimental study on the effect of loading rate on the strain energy accumulation and release during the weakening process of circular-tunnel

• Published in: Geomechanics and geophysics for geo-energy and geo-resources. Vol. 10; no. 1; pp. 1 - 15
• Main Authors: You, Xun, Wang, Yunmin, Liu, Xiangxin, Zhao, Kui, Zhang, Zhengnan
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.12.2024; Springer Nature B.V; Springer
• Subjects: Accumulation; Circular-tunnel; Correspondence; Dredging; Energy; Engineering; Environmental Science and Engineering; Excavation; Flakes; Foundations; Geoengineering; Geomechanical challenges in the process of comprehensive utilization of closed/abandoned mines; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Hydraulics; Hydrostatic pressure; Instability; Load distribution; Loading rate; Phases; Probability theory; Rocks; Strain energy; Strain energy accumulation; Strain energy release; Tunnel construction; Tunnel supports; Tunnels; Vertical loads; Weakening process; Circular-tunnel; Strain energy release; Strain energy accumulation; Weakening process; Loading rate

The weakening of circular tunnels is a global problem that has not been resolved satisfactorily. In the tunnelling process, surrounding rock of circular-tunnel performs a process of “excavating → weakening → continuous excavating → weakening strengthens”. Different rates of excavation affect the str...